separate LH thread information from thread class - ISO 15786 compliance

[freesbee]

I would like that inventor could separate the LH thread information from the Thread Class, so that ISO 15768 requirements on holes notation could be met.
Inventor has currently 2 limitations preventing it to fulfill ISO 15768 requirements. If this idea would be implemented, one of the two limitations would be addressed.

1st limitation: inventor cannot distinguish between U, V, W and V (underlined V) hole bottoms
2nd limitation: inventor cannot document the LH (left hand thread) WITHOUT the Thread Class indication because the two information are collapsed in the <THRC> thread property, thus the notation marked with B is technically not possible to be obtained

If you vote for this idea, please consider to vote also for the other one addressing the other limitation.

Behind this apparently very simple issue there are quite intensive thoughts. Long story made short:
1. the ISO 15768 norm itself is NOT unambiguous, sometimes leading to critical situations: the ambiguity between V holes and V holes on the callout (figure 5 and 7 on page 5 of the ISO_FDIS_15786_draft.pdf*) leads to the critical situation explained in the Note C.
2. even if Inventor is much more capable than what the norm requires on certain aspects, it cannot fulfill ALL basic norm requirements on basic aspects (notation as in the Note B is not possible: the thread tolerance will be anyway visible on the drawing)

1st limitation: critical    2nd limitation: irritating

The issue is known to Autodesk development and is being discussed since more than one year. In this moment the reference developer is Jason Hetu, and for what I understood from him they are "working on another hole project to fix some of the hole note, and thread table information". According to what he wrote THIS idea is already in the backlog. Of course additional votes can only help speeding up the process.

Please, vote up!
* this document is a draft, if anybody has the final document he is welcome to clear the point
@@@Dan, do we get in trouble for posting a norm draft in ideas?

[michaelhahn]

When you place a hole and thread note on a left handed thread you get LH automatically.  It would be nice if you could toggle on the ability to have the RH at the end of the description when placing a right handed thread.

[TFoerst]

Put the option in to the Style Editor.

There is a need to change the text, for instance in L instead of LH.

[Yijiang.Cai]

Many thanks for posting this idea, and tracked as [INVGEN-59945].

[freesbee]

Dear @Yijiang.Cai 

Is there already a timeframe for this fix or does it simply mean that Autodesk has simply acknowledged that there is a serious problem in this area?

[Yijiang.Cai]

@freesbee, we have tracked this idea in our system, and working with project team to investigate & prioritize the idea in our backlog list. We will keep you updated here.

We always appreciate the feedback here, and will estimate the idea carefully. 

[Yijiang.Cai]

This idea has been implemented within Autodesk Inventor 2025. Please review the Inventor 2025 What's New article here. For more information regarding how you may leverage the feature, and please review this page. Special thanks to everyone who cast a vote for it.

[freesbee]

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